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Practical Network Automation

You're reading from   Practical Network Automation Leverage the power of Python and Ansible to optimize your network

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781788299466
Length 266 pages
Edition 1st Edition
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Author (1):
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Abhishek Ratan Abhishek Ratan
Author Profile Icon Abhishek Ratan
Abhishek Ratan
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Table of Contents (8) Chapters Close

Preface 1. Fundamental Concepts 2. Python for Network Engineers FREE CHAPTER 3. Accessing and Mining Data from Network 4. Web Framework for Automation Triggers 5. Ansible for Network Automation 6. Continuous Integration for Network Engineers 7. SDN Concepts in Network Automation

Device configurations

We need to deploy three routers with a standard base configuration. The base configuration remains the same on each router, but as each router is different, we need to automate the generation of the three config files for each router. The assumption is that all the routers have a standard hardware configuration with the same types of ports:

As we can see in the diagram, routers R1, R2, and R3 have the following cabling:

  • R1 f1/0 (FastEthernet1/0) connected R2 f1/0
  • R1 f0/0 connected to R3 f0/0
  • R2 f0/1 connected to R3 f0/1

The standard config or template is as follows:

 hostname <hname>
ip domain-lookup
ip name-server <nameserver>
logging host <loghost>
username cisco privilege 15 password cisco
enable password cisco
ip domain-name checkmetest.router
line vty 0 4
exec-timeout 5

Adding some more complexity, we need to ensure the name-server...

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